FAA Part 107 Drone Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Sioux Gateway/Col Day (SUX) Airport is classified as Class D airspace. Class D airspace surrounds airports with operational control towers where the air traffic control (ATC) has to manage aircraft in that airspace to ensure safe takeoffs and landings. In Class D airspace, pilots are required to establish two-way communication with the ATC before entering that area.

The characteristics that define Class D airspace include a vertical limit that typically extends from the surface up to the base of the overlying Class E airspace, usually at 2,500 feet above ground level (AGL). This class of airspace is specifically designed to provide airspace management around airports that have lower activity levels than those found in Class B and C airspace but still need to maintain controlled flight operations.

Therefore, understanding the operational procedures, communication requirements, and the airspace structure around an airport like Sioux Gateway helps drone operators and pilots ensure compliance and safe operation within the vicinity of such controlled environments.